JP6308646B2 - Absorbent articles - Google Patents

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing menstrual blood and vaginal discharge, and an absorption body that has an absorbent body that deforms three-dimensionally so as to rise on the skin side. It relates to sex goods.

  Conventionally, as absorbent articles such as sanitary napkins, panty liners, incontinence pads, liquid-impervious back sheets such as polyethylene sheets or polyethylene sheet-laminated nonwoven fabrics, and liquid-permeable surface sheets such as nonwoven fabrics or liquid-permeable plastic sheets There is known an intervening absorber made of cotton-like pulp or the like.

  Numerous improvements have been made to this type of absorbent article, and various measures have been taken to improve fit. For example, in the following Patent Document 1, the surface layer and the absorption layer are compressed from the surface layer toward the back surface layer on the skin contact surface side of the surface layer, and the surface layer and the absorption layer are integrated. And a compressed pattern portion consisting of a combination of the non-compressed portion and the compressed portion that are not compressed, and the compressed pattern portion is a linear groove pattern. A linear pattern portion comprising a two-dimensional pattern, and the linear pattern portion and the planar pattern portion are divided by the planar pattern portion. In such a form, an absorbent article is disclosed in which the linear pattern portions and the planar pattern portions are alternately and continuously arranged in the longitudinal direction of the absorbent article.

  Moreover, in the following patent document 2, as an absorber, it has at least two sheet-like absorbers laminated, and each of the two sheet-like absorbers is located on both sides in the longitudinal direction of the absorber. In each of the above, an absorbent article having a plurality of cuts is disclosed.

JP 2004-181107 A JP 2009-219706 A

  In recent years, in the case of absorbent articles that are relatively bulky, there are problems such as poor wearing feeling, inconvenient to carry, and poor storage properties, as well as demands for more efficient logistics and resource saving. Therefore, there is a tendency to prefer a thin absorbent article in which the thickness of the absorber at the body fluid discharge site is reduced.

  However, in the absorbent article described in Patent Document 1, the fitting property is improved by controlling the folding of the absorbent article by providing predetermined compression patterns on the surface layer and the absorbent layer. When a thin absorbent body is used, it is difficult to provide a compression portion, and it is difficult to produce a difference in rigidity between the compression portion and the non-compression portion, so that a sufficient effect cannot be exhibited. Moreover, in the absorbent article described in Patent Document 2, since the absorbent body is configured by laminating at least two sheet-like absorbent bodies, there is a problem that the absorbent article becomes thick and the wearing feeling is poor. Arise.

  Then, the main subject of this invention is providing the absorbent article which can improve fit, without impairing a mounting feeling.

In order to solve the above-mentioned problem, as the present invention according to claim 1, on the skin side of the back sheet, from the absorbent body divided into a plurality in the width direction and the liquid-permeable top sheet covering at least the skin side of the absorbent body The divided absorbent material is an absorbent article arranged in the width direction along the longitudinal direction,
The split absorbent material is disposed on each side in the width direction of the absorbent article and a central divided absorbent material disposed on the widthwise center part of the absorbent article, and on the side edges of the absorbent article. The absorbent material is disposed on both sides in the width direction of the absorbent article across the center divided absorbent material and the both side divided absorbent material. While each having an overlap margin with the absorbent material, it consists of an intermediate divided absorbent material disposed on the back sheet side surface of the central divided absorbent material and both side divided absorbent materials in the overlap margin portion,
The split absorbent material is bonded to the back sheet at the entire circumference along the peripheral edge of the absorbent article, and the overlap margin portion of the double-side split absorbent material and the intermediate split absorbent material but engaged hand against the portion sealing portion spaced in the longitudinal direction of the absorbent article,
Wherein not all the peripheral sealing portion except joined the divided absorbent material to said backsheet, said central split absorber is engaged against only the backsheet side at the entire periphery sealing portion of the longitudinal ends An absorbent article is provided.

In the first aspect of the present invention, the divided absorption comprising the absorbent body divided into a plurality in the width direction of the absorbent article and the liquid-permeable surface sheet covering at least the skin side of the absorbent body on the skin side of the back sheet. The material is an absorbent article in which a plurality of materials are arranged in the width direction along the longitudinal direction. The split absorbent material is disposed at the center split absorbent material disposed at the center in the width direction of the absorbent article and on both sides in the width direction of the central split absorbent material, and at the side edge of the absorbent article. The absorbent material is disposed on both sides in the width direction of the absorbent article across the center divided absorbent material and the both side divided absorbent material. While having an overlap margin with the absorbent material, each of the overlap margin portions is composed of the central divided absorbent material and the intermediate divided absorbent material disposed on the back sheet side surface of the both-side divided absorbent material. Further, the split absorbent material is bonded to the back sheet at the entire circumference along the peripheral edge of the absorbent article, and the overlap between the both-side split absorbent material and the intermediate split absorbent material the cash portion, is engaged hand against the portion sealing portion spaced in the longitudinal direction of the absorbent article, the divided absorbent material is not bonded to the backsheet all around the seal portion except. Furthermore, the central dividing absorber is engaged against only the backsheet side at the entire periphery sealing portion of the longitudinal ends.

For this reason, at the time of wearing, each split absorbent material can be individually deformed along the shape of the body by leg pressure from both sides. Specifically, since the center-divided absorbent material is bonded to the back sheet side only at the entire circumference seal portions at both ends in the longitudinal direction, the center portion in the width direction of the absorbent article is brought to the skin side by leg pressure from both sides. When it curves to become convex, it has a structure that tends to rise to the skin side. Furthermore, when the both-side split absorbent and the intermediate split absorbent are deformed inward by receiving the leg pressure from both sides, the center split absorbent is pushed up from the lower side at the inner edge in the width direction of the intermediate split absorbent. It plays the role of assisting the bulge of the split absorbent to the skin side. That is, since the both sides divided absorbent material and the intermediate divided absorbent material are engaged hand against the portion sealing portion, Ashi圧from both sides while suppressing twisting, applied to both sides divided absorber of the divided absorbent Is moderately transmitted to the intermediate divided absorbent, and the effect of pushing up the central divided absorbent from the lower side by the inner edge of the intermediate divided absorbent is exhibited. For this reason, a center division | segmentation absorption material adheres also to the narrow groove | channel and unevenness | corrugation of a body, and it becomes possible to improve fit, without impairing a mounting feeling.

Further, in the invention described in claim 1, wherein the divided absorbent material is bonded to the backsheet with only all around the seal portion, by not joined in other cases, as well as easily raised to the skin side of the central dividing absorber This prevents the bilateral split absorbent and the intermediate split absorbent from twisting due to leg pressure.

  As the present invention according to claim 2, there is provided the absorbent article according to claim 1, wherein the liquid-permeable surface sheet individually covers each absorber.

  The invention described in claim 2 is a first embodiment of the present absorbent article. In this form, since each absorber divided | segmented into multiple in the width direction is each individually covered with the liquid-permeable surface sheet, each division | segmentation absorber becomes deformable independently.

  The present invention according to claim 3, wherein the liquid-permeable topsheet is continuously provided in the width direction of the absorbent article while having a margin in the width direction between the absorbent bodies. An absorbent article is provided.

  The invention described in claim 3 is a second embodiment of the present absorbent article. In this embodiment, as the divided absorbent material, the liquid-permeable surface sheet covering each absorber is continuously provided in the width direction while having a margin in the width direction between the absorbers. It can prevent that a clearance gap produces between each division | segmentation absorbers, without preventing a deformation | transformation of a division | segmentation absorber.

As the present invention according to claim 4, in place of the configuration in which the intermediate divided absorbent material is disposed on the surface of the back divided sheet side of the central divided absorbent material and the double divided absorbent material,
The intermediate divided absorbent material is disposed on the inner side in the width direction of the absorbent article on the back sheet side surface of the central divided absorbent material, and the outer side in the width direction of the absorbent article is on the skin side of the double divided absorbent material An absorbent article according to any one of claims 1 to 3 is provided on the surface.

  The invention described in claim 4 is a third embodiment of the present absorbent article, wherein the arrangement order of the intermediate divided absorbent material arranged across the central divided absorbent material and the both side divided absorbent materials is different. is there. Specifically, the widthwise inner side of the absorbent article is disposed on the surface on the back sheet side of the central divided absorbent material, and the widthwise outer side of the absorbent article is the skin side surface of the both side divided absorbent material It is arranged. As a result, when subjected to leg pressure from both sides during wearing, the intermediate split absorbent pushes up the middle split absorbent from the lower side at the inner edge in the width direction of the double split absorbent. It is possible to further enhance the effect of pushing up.

  As this invention which concerns on Claim 5, the width | variety of the said division | segmentation absorber is set to 20 mm or less, The absorbent article in any one of Claims 1-4 is provided.

  In the invention according to the fifth aspect, by setting the width of the divided absorbent material to 20 mm or less, it is easy to follow the curve of the body.

  As this invention which concerns on Claim 6, the width | variety of the said overlap allowance is set to 2-10 mm, The absorbent article in any one of Claims 1-5 is provided.

  In the invention described in claim 6, by setting the width of the overlap margin to 2 to 10 mm, the thickness of the absorbent article itself is kept low, and the gap is less likely to occur when the divided absorbent material is raised.

  As the present invention according to claim 7, there is provided the absorbent article according to any one of claims 1 to 6, wherein the partial seal portion is provided on each of the front and rear sides of the absorbent article. .

  According to the seventh aspect of the present invention, by defining the position of the partial seal portion, the independent movement of each divided absorbent material is not inhibited, and the twist due to the leg pressure can be effectively prevented.

  As described above in detail, according to the present invention, the fit can be improved without impairing the wearing feeling.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. It is the II-II arrow directional view. It is the III-III arrow directional view of FIG. It is sectional drawing which shows a mounting state. It is a cross-sectional view (II-II line arrow view of FIG. 1) which shows the sanitary napkin 1A which concerns on a 2nd form example. It is a cross-sectional view (II-II line arrow view of FIG. 1) which shows the sanitary napkin 1B which concerns on a 3rd form example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First embodiment]
The sanitary napkin 1 according to the present invention includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, and the like, and a plurality of sanitary napkins arranged in the width direction along the longitudinal direction on the skin side of the liquid-impervious back sheet 2. The divided absorbent materials 5, 5. The divided absorbent material 5 quickly transmits the absorbent body 4 made of cotton-like pulp or synthetic pulp divided into a plurality of parts in the width direction, and menstrual blood or the like covering at least the skin side of the absorbent body 4. It is comprised from the liquid-permeable surface sheet 3. FIG.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film. In recent years, those having moisture permeability tend to be used from the viewpoint of preventing stuffiness. This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.

As the liquid-permeable surface sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. The basis weight is 15 to 45 g / m ² , preferably 25 to 35 g / m ² .

  The absorbent body 4 is, for example, a mixture of a superabsorbent resin in pulp or a mixture of chemical fibers in a pulp and a superabsorbent polymer. The absorbent body 4 can be surrounded by crepe paper (not shown) in order to maintain the shape and quickly diffuse menstrual blood and to prevent the menstrual blood and the like once absorbed.

  Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and those made of artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price.

The absorbent body 4 is preferably a sheet-shaped absorbent body such as a SAP sheet prepared by an airlaid method or a non-woven fabric coated with a superabsorbent resin (SAP). The basis weight of the absorber 4 is 50 to 180 g / m ² , preferably 70 to 90 g / m ² . The thickness of the absorber 4 is 0.5 mm to 1.5 mm, preferably 0.5 to 0.8 mm.

  The absorbent body 4 may be mixed with synthetic fibers. As the synthetic fiber, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be a mixture. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. In the case of a hydrophobic fiber, it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids.

  As shown in FIGS. 1 to 3, the divided absorbent material 5 is composed of an absorbent body 4 having a predetermined width and a liquid-permeable surface sheet 3 that covers at least the skin side of the absorbent body 4. Yes. A plurality of the divided absorbent materials 5 are disposed in the width direction over the entire length of the sanitary napkin 1, and five in the illustrated example. In the divided absorbent material 5 according to the first embodiment, each absorber 4 is individually covered with the liquid-permeable surface sheet 3.

  The divided absorbent material 5 is disposed at the center divided absorbent material 6 disposed at the center portion in the width direction of the napkin 1, and disposed at both sides in the width direction of the central divided absorbent material 6. Are arranged on both sides in the width direction of the napkin 1 across the center divided absorbent material 6 and the both side divided absorbent material 7, respectively, and the separating portion. 9 so that the center split absorbent 6 and the side split absorbent 7 have overlap margins 10 and 10 respectively, and the center split absorbent 6 and the side split absorbent 7 are not in the overlap margin 10 portion. It is comprised from the intermediate | middle division | segmentation absorbers 8 and 8 arrange | positioned by the surface of the liquid-permeable back sheet 2 side (non-skin side).

The divided absorbent material 5 is joined to the liquid-impervious back sheet 2 at the entire circumference along the peripheral edge of the napkin 1, and the both-side divided absorbent material 7 and the intermediate divided absorbent material. the overlapping margin 10 portion 8 has engaged the hand against the portion sealing portions 12, 12 spaced longitudinally of the napkin 1. Therefore, the center division | segmentation absorber 6 is joined to the liquid-impermeable back sheet 2 only in the said perimeter seal part 11 of a longitudinal direction both ends. The both-side split absorbent material 7 is bonded to the liquid-impervious back sheet 2 at both ends in the longitudinal direction and the outer side in the napkin width direction by the all-around seal portion 11, and the inner side in the napkin width direction is in the napkin longitudinal direction. Are joined to the intermediate split absorbent 8 by partial seal portions 12 spaced apart from each other. The intermediate split absorbent 8 is a partial seal portion in which both end portions in the longitudinal direction are joined to the liquid-impervious back sheet 2 by the all-round seal portion 11 and the side portion on the outer side in the napkin width direction is spaced in the napkin longitudinal direction. 12 is joined to the split absorbent material 7 on both sides .

  For this reason, the divided absorbent members 5, 5... Can be individually deformed along the shape of the body by leg pressure from both sides in the width direction at the time of wearing. Specifically, since the central split absorbent 6 is joined to the liquid-impermeable back sheet 2 only at the circumferential seals 11 and 11 at both ends in the longitudinal direction, it receives leg pressure from both sides in the width direction. When the sanitary napkin 1 is curved so that the central portion in the width direction is convex toward the skin side, the sanitary napkin 1 has a structure that easily rises toward the skin side. Furthermore, when the both-side split absorbent 7 and the intermediate split absorbent 8 are pushed inward by the leg pressure from both sides in the width direction, the central split absorbent 6 is lowered on the inner edge in the width direction of the intermediate split absorbent 8. It acts so that it may push up from the center, and the protrusion to the skin side of the center division | segmentation absorber 6 may be assisted. That is, since the divided absorbent material 7 on both sides and the intermediate divided absorbent material 8 are joined by the partial seal portion 12, in addition to the divided absorbent material 7 on both sides while suppressing the twist of each divided absorbent material 7,8. The leg pressure from the both sides in the width direction is appropriately transmitted to the intermediate divided absorbent 8, and the effect of pushing up the central divided absorbent 6 from below by the inner edge of the intermediate divided absorbent 8 is exhibited. For this reason, the center division | segmentation absorber 6 closely_contact | adheres to the narrow groove | channel and unevenness | corrugation of a body, and it becomes possible to improve fit, without impairing a mounting feeling.

  Further, even when torsion is applied to the sanitary napkin 1 such as during walking, each divided absorbent material 5 can be individually deformed, so that the structure can absorb torsional deformation by making separate movements. Yes. For this reason, it becomes easy to adhere | attach along the shape of a body, and fit property can be maintained now.

  Further, since the intermediate divided absorbent 8 is disposed on the surface of the double-sided divided absorbent 7 on the back sheet 2 side, even if the body fluid flows from the center in the width direction to the outside, it is dammed by the double divided absorbent 7. Stopped and can prevent leakage to both sides.

  As shown in FIG. 1, the width L of the sanitary napkin 1 is preferably 90 mm or less, and more preferably 45 to 55 mm in order to make the width of the shorts the width of the crotch so as not to give a sense of discomfort around the legs.

Further, the width L1 of the divided absorbent 5 is set to 20 mm or less, preferably 10 to 15 mm. Thereby, it can set to the width | variety which follows a curve of a body easily, and fit property with a body can be improved. Further, since the divided absorbent material 5 is bonded to the backsheet 2 with the only the entire periphery sealing portion 1 1, the width of the divided absorbent material 5 is too narrow, divided absorbent 5 becomes too deformed individually On the contrary, it may cause discomfort. In addition, although the said center division | segmentation absorption material 6, both-side division | segmentation absorption material 7, and the intermediate | middle division | segmentation absorption material 8 may be formed in a respectively different width if it is in said range, it is desirable to form all with the same width | variety.

  The width a of the overlap margin 10 is set to 2 to 10 mm, preferably 5 to 7 mm. In this range, there is little influence on the thickness of the napkin itself, almost no sense of incongruity is felt, and if it is formed with this width, it becomes a width where the partial seal portion 12 can be provided. Further, the width is set such that a large gap is not formed even if the divided absorbent 5 is raised on the skin side.

The both-side divided absorbent materials 7 and 7 may be arranged adjacent to both sides in the width direction of the central divided absorbent material 6, but as shown in FIG. 1, the width direction of the central divided absorbent material 6 It is desirable to dispose them with the separating portions 9 on both sides. When the separating portion 9 is provided, a frictional force is not generated between the central divided absorbent material 6 and the both side divided absorbent materials 7, so that the central divided absorbent material 6 is easily raised on the skin side when worn. The width b of the separation portion 9 is 15 mm or less, preferably 2 to 15 mm.

  As the dimension (width c × length d) of the partial seal portion 12, the bonding strength is ensured and the width is set so as not to cause discomfort during mounting. The length d is 5 mm or less, preferably 2 to 3 mm. The width c is set to be equal to or less than the width a of the overlap margin 10.

  The width e of the all-round seal portion 11 should be 5 mm or less, preferably 2 to 3 mm so as to ensure a bonding strength and not to cause a sense of incongruity during mounting.

  The thickness of the divided absorbent material 5 is 3 mm or less, preferably 1.2 to 1.8 mm, so as not to cause an uncomfortable feeling at the time of wearing and to ensure a body fluid absorbing function.

  The outline on both sides of the napkin may be a straight line, but as shown in FIG. 1, it may be a curved line that protrudes inward in the width direction so that it can handle even when subjected to strong leg pressure from both sides in the width direction. preferable.

  The partial seal portion 12 is provided only at the overlapping portion 10 between the both-side divided absorbent 7 and the intermediate divided absorbent 8 and is provided at the overlapping portion 10 between the central divided absorbent 6 and the intermediate divided absorbent 8. Not. That is, the central divided absorbent 6 is joined to the liquid-impermeable back sheet 2 only at the entire circumference seal portions 11 at both ends in the longitudinal direction, and the partial seal portion 12 is not provided at the middle portion in the longitudinal direction. If the central split absorbent 6 and the intermediate split absorbent 8 are provided at the overlapping margin 10 portion, it becomes a hindrance to independent deformation of the central split absorbent 6, so the central split absorbent 6 is on the skin side. There is a risk that it will rise and become unable to adhere to the skin surface.

  In addition, it is preferable that the partial seal portion 12 is provided on the front side and the rear side of the sanitary napkin 1 respectively on the left and right sides and not disposed in the central region in the longitudinal direction. As a result, independent deformation of the both-side divided absorbent material 7 and the intermediate divided absorbent material 8 is not inhibited in the central region in the longitudinal direction, and the middle divided absorbent material 6 is easily deformed so as to assist the bulge to the skin side. By arranging each on the front side and the rear side, the twist due to the leg pressure can be effectively prevented. As shown in FIG. 1, the interval f in the napkin longitudinal direction of the partial seal portions 12, 12 arranged before and after the sanitary napkin 1 (interval in the napkin longitudinal direction where the partial seal portion 12 is not arranged) is 40 to 100 mm, Preferably it is 60-80 mm.

  The liquid-permeable surface sheet 3 only needs to be provided so as to cover at least the skin side surface of the absorbent body 4, but as shown in FIG. Is preferably folded back so as to be wound around the side edge of the absorbent body 4 and extended to the non-skin side surface of the absorbent body 4.

  In particular, when the absorbent body 4 is composed of an SAP sheet, the liquid-permeable surface sheet 3 is disposed so as to be wound on both sides of the absorbent body 4 as described above so that SAP does not spill out from both sides. desirable. Moreover, when arrange | positioning only the skin side surface without extending the liquid-permeable surface sheet 3 to the both sides of the absorber 4, it is preferable to arrange | position SAP to the center part of the absorber 4, and not arrange | position to a peripheral part.

  The absorbent body 4 may be of the same specification for each of the divided absorbent materials 5 (the central divided absorbent material 6, the both-side divided absorbent material 7, and the intermediate divided absorbent material 8), but when subjected to strong leg pressure. In order to increase the rigidity of the divided absorbent material 5 arranged on the outer side in the width direction, the basis weight of the absorbent body 4 may be set higher as the material is arranged on the outer side of the napkin.

  The all-around seal portion 11 is formed on the liquid-permeable surface sheet 3 in order to join the divided absorbent material 5 and the liquid-impermeable back sheet 2 along the peripheral edge of the sanitary napkin 1 by heat fusion. It is a heat seal part provided over the entire circumference from the surface side. The all-round seal portion 11 is provided continuously or intermittently along the peripheral edge of the sanitary napkin 1, but even when provided intermittently, the width direction between the front and rear partial seal portions 12, 12 is provided. Continuous on both sides. Since the portion between the front and rear partial seal portions 12 and 12 is the portion most susceptible to the influence of leg pressure, by providing the all-round seal portions 11 on both sides continuously, the twist when receiving the leg pressure is improved. It becomes possible to suppress. In addition, the entire peripheral seal portion 11 at the front and rear end portions of the napkin is configured so that the seal portion is always located at the overlap margin 10 of the divided absorbent members 5 and 5 and the non-seal portion is located at portions other than the overlap margin 10. Also good.

  When the sanitary napkin 1 is manufactured, the liquid-permeable surface sheet 3 is joined to the absorbent body 4 cut to a predetermined width by a cutter device to produce the divided absorbent material 5, and then the liquid-impermeable back sheet 2. It arrange | positions, providing the said overlap margin 10 above, gives the said perimeter seal | sticker part 11 and the partial seal | sticker part 12, and cuts a peripheral part with a product cutter after that, and is completed.

[Second embodiment]
As shown in FIG. 5, the sanitary napkin 1 </ b> A according to the second embodiment has a liquid-permeable surface sheet 3 that covers each absorber 4 as the split absorbent 5, and the width direction between the absorbers 4 and 4. The sanitary napkin 1 according to the first embodiment is different from the sanitary napkin 1 according to the first embodiment in that it is provided continuously in the width direction while having an allowance margin 13.

  The liquid-permeable surface sheet 3 is folded back to the non-skin side so as to wrap around the side edge of the absorbent body 4 located on the skin side in the overlapping portion 10 and the absorbent body 4 located on the non-skin side. The side edge portion or the vicinity thereof is folded back to the opposite side and joined to the skin side surface of the non-skin-side absorbent body 4. In the overlap margin 10, the liquid-permeable surface sheets 3, 3 that are folded back and laminated in layers are not joined except for the partial seal portion 12.

  By providing the margin allowance 13, the deformation of each of the divided absorbent materials 5 is unlikely to affect the other divided absorbent materials 5, so that when the divided absorbent materials 5, 5 ... are subjected to leg pressure, Deformable. Moreover, it can prevent that a clearance gap produces between the division | segmentation absorbers 5 and 5 by providing the liquid-permeable surface sheet 3 continuously in the napkin width direction.

[Third embodiment]
As shown in FIG. 2, the sanitary napkin 1 </ b> B according to the third embodiment is configured such that the intermediate divided absorbent 8 of the sanitary napkin 1 according to the first embodiment is not formed between the central divided absorbent 6 and the double divided absorbent 7. Instead of the configuration disposed on the surface of the liquid permeable back sheet 2 side, as shown in FIG. 6, the intermediate divided absorbent 8 has a liquid impervious inner side in the napkin width direction of the central divided absorbent 6. It is arranged on the surface on the back sheet 2 side (surface on the non-skin side), and the outside in the napkin width direction is arranged on the skin side surface of the double-sided divided absorbent material 7. That is, it arrange | positions sequentially in the non-skin side (impermeable liquid back sheet 2 side) toward the outer side from the width direction center. As a result, the body fluid damming effect by the side edges of the both-side divided absorbent material 7 cannot be obtained between the intermediate divided absorbent material 8 and the both-side divided absorbent material 7 like the sanitary napkin 1 according to the first embodiment. However, when subjected to leg pressure from both sides during wearing, the intermediate divided absorbent 8 is pushed up from the lower side at the inner edge in the napkin width direction of the double divided absorbent 7 so that the intermediate divided absorbent 8 is the central divided absorbent. The effect of pushing up 6 from below can be further enhanced.

  In addition, in FIG. 6, although each absorber 4 is individually covered with the liquid-permeable surface sheet 3, it covers with the liquid-permeable surface sheet 3 continuous in the width direction like the said 2nd form example. Is also possible.

[Other examples]
In the embodiment described above, a total of five divided absorbent materials 5 are provided by providing each of the both-side divided absorbent material 7 and the intermediate divided absorbent material 8 on the left and right sides. By providing two or more intermediate divided absorbent materials 8 on the left and right sides, a total of seven or more divided absorbent materials 5 may be provided.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid-impermeable back sheet, 3 ... Liquid-permeable surface sheet, 4 ... Absorber, 5 ... Divided absorbent material, 6 ... Center divided absorbent material, 7 ... Both-side divided absorbent material, 8 ... Intermediate divided absorbent material, 9 ... separation part, 10 ... overlap margin, 11 ... full circumference seal part, 12 ... partial seal part

Claims (7)

On the skin side of the back sheet, a plurality of divided absorbent materials are arranged in the width direction along the longitudinal direction, and the absorbent body is divided into a plurality of width-divided absorbers and a liquid-permeable surface sheet covering at least the skin side of the absorber. An absorbent article provided,
The split absorbent material is disposed on each side in the width direction of the absorbent article and a central divided absorbent material disposed on the widthwise center part of the absorbent article, and on the side edges of the absorbent article. The absorbent material is disposed on both sides in the width direction of the absorbent article across the center divided absorbent material and the both side divided absorbent material. While each having an overlap margin with the absorbent material, it consists of an intermediate divided absorbent material disposed on the back sheet side surface of the central divided absorbent material and both side divided absorbent materials in the overlap margin portion,
The split absorbent material is bonded to the back sheet at the entire circumference along the peripheral edge of the absorbent article, and the overlap margin portion of the double-side split absorbent material and the intermediate split absorbent material but engaged hand against the portion sealing portion spaced in the longitudinal direction of the absorbent article,
Wherein not all the peripheral sealing portion except joined the divided absorbent material to said backsheet, said central split absorber is engaged against only the backsheet side at the entire periphery sealing portion of the longitudinal ends An absorbent article characterized by having   The absorbent article according to claim 1, wherein the liquid-permeable surface sheet individually covers each absorber.   The absorbent article according to claim 1, wherein the liquid-permeable surface sheet is continuously provided in the width direction of the absorbent article with a margin in the width direction between the absorbent bodies. In place of the configuration in which the intermediate divided absorbent material is disposed on the back sheet side surface of the central divided absorbent material and both side divided absorbent materials in the overlap margin portion,
The intermediate divided absorbent material is disposed on the inner side in the width direction of the absorbent article on the back sheet side surface of the central divided absorbent material, and the outer side in the width direction of the absorbent article is on the skin side of the double divided absorbent material The absorptive article according to any one of claims 1 to 3 arrange | positioned at the surface.   The width | variety of the said division | segmentation absorbent material is an absorbent article in any one of Claims 1-4 set to 20 mm or less.   The absorbent article according to any one of claims 1 to 5, wherein a width of the overlap margin is set to 2 to 10 mm.   The absorbent article according to any one of claims 1 to 6, wherein each of the partial seal portions is provided on the front side and the rear side of the absorbent article.

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